Rocky's Solar Reel Knob - White filter-length_23 3/8 inches It includes basketball and needle

It includes basketball and needle

This Plastic Vertical Backwash Sight Glass is 1-1/2 Inches threaded

bottles and eliminates seams in multi roll applications

These mineral cartridges (pack of 4) are for the Nature2 Aboveground A or Pro A Plus filters for aboveground pools up to 30

It is an easy-to-install

Rocky's Solar Reel Knob - White filter-length_23 3/8 inches It includes basketball and needleThis is a Rocky Roller White Knob replacement which is used on all of their Solar Reels (residential and commercial inground solar reels). This knob can also be switched with a handle in order to have double handles on your solar reel system.